package com.dhcc.logs.aspect;

import java.lang.reflect.Method;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.Date;

import javax.servlet.http.HttpServletRequest;

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import com.alibaba.fastjson.JSON;
import com.dhcc.logs.common.annotation.MyLog;
import com.dhcc.logs.entity.SysLog;

/**
 * 系统日志：切面处理类
 */
@Aspect
@Component
public class SysLogAspect {
	 private static Logger logger = LoggerFactory.getLogger(SysLogAspect.class);// slf4j日志记录器

    //定义切点 @Pointcut
    //在注解的位置切入代码
    @Pointcut("@annotation( com.dhcc.logs.common.annotation.MyLog)")
    public void logPoinCut() {
    }

    //切面 配置通知
    @AfterReturning("logPoinCut()")
    public void saveSysLog(JoinPoint joinPoint) {
        System.out.println("log...切面.......");
        //保存日志
        SysLog sysLog = new SysLog();

        //从切面织入点处通过反射机制获取织入点处的方法
        MethodSignature signature = (MethodSignature) joinPoint.getSignature();
        //获取切入点所在的方法
        Method method = signature.getMethod();

        //获取操作
        MyLog myLog = method.getAnnotation(MyLog.class);
        if (myLog != null) {
            String value = myLog.value();
            sysLog.setOperation(value);//保存获取的操作
        }
        //获取请求的类名
        String className = joinPoint.getTarget().getClass().getName();
        //获取请求的方法名
        String methodName = method.getName();
        sysLog.setMethod(className + "." + methodName);
        //请求的参数
        Object[] args = joinPoint.getArgs();
        //将参数所在的数组转换成json
        String params = JSON.toJSONString(args);
        sysLog.setParams(params);

        sysLog.setCreateDate(new Date());
        //获取用户名
        sysLog.setUsername("system");
        //获取用户ip地址
        ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        HttpServletRequest request = attributes.getRequest();
        String reqIp = request.getRemoteAddr();
        InetAddress ip = null;
		try {
			ip = InetAddress.getLocalHost();
		} catch (UnknownHostException e) {
			e.printStackTrace();
		}
        String localIp = ip.getHostAddress();
        sysLog.setIp(localIp);
        //调用service保存SysLog实体类到数据库
        logger.info(JSON.toJSONString(sysLog));
        
    }

}